Stenciling apparatus



Nov. 7, 1939 H. W. SCHNEIDER STENCILING APPARATUS Original Filed Aug. 2l, 1936 2 Sheets-Sheet 1 Novf 7, 1939. w SCHNEIDER 2,179,222

` STENCILING APPARATUS Original Filed Aug. 21, 1936 2 Sheets-Shet 2 Byov z ATTO EYS.

IN V EN TOR. HWI .SCENE/am?.

atentecl Nov. 7, 1939 2,17 9,222 STENCILING APPARATUS Henry W. Schneider, Toledo, Ohio, assignor to Libbey rGlass Company, a corporation of Ohio original application August 21, 193s, serial No.

Divided and this application November 21, 1938, Serial No. 241,521

5 claims; (ol. loll-126) The present invention relates to stencilingr apparatus of the type designed for use in applying decorations or lettering to the curved surfaces of articles such as tumblers by a stenciling process in which the article undergoing decoration or lettering is maintained in tangential rolling line contact with the underneath surface of a stencil screen while coloring material is forced through the screen by the spreading action of a squeegee.

v'I'his application is a division of my copendlng application, Serial No. 97,241,.1ed August 21, -i936, for Method of and apparatus for stenciling articles.

The principal object of the invention is to provide an improved article support or carriage by means of which articles such as tumblers having cylindrical or tapered inclined surfaces may be quickly and conveniently positioned in the machine with such surfaces in operative contact with all the stencil screen.

Other objects of the invention, not at this time more particularly enumerated, will become apparent as the nature of the same is better understood.

2% In the accompanying drawings:

Fig. l is a vertical sectional View taken through a stenciling apparatus constructed in accordance with the principles of the present invention; and

Fig. 2 is a sectional view taken substantially 3U along the line 2-2 of Fig. 1. y

The apparatus involves in its general organization a` base I in the form of an elongated, substantially rectangular casting provided with a recess II. Extending vertically upward from the 35 casting is a pair of standards or supports I2 having integrally formed aligned bearings I3 medially of their ends which serve to support therebetween a horizontal rock shaft I4. The improved article supporting assembly I5 is pivotill ally mounted on the rock shaft I4 and isdesigned to support a tumbler T or like article to be decorated.

A plurality of supporting members, one of which is shown at IE, each having a forwardly and 45 upwardly extending supporting arm I] and a vertically extending arm I8, are bolted or otherwise secured to the base IIl at spaced points therealong.. A pair of front and rear transversely extending horizontal tracks I9 and 20 respectively .are carried by the supporting arms I1 and I8 and are substantially coextnsive with the base Ill. Supported upon the tracks I9 and 20 and movable therealong transversely of the apparatus, is a stencil screen assembly 2| having asso- 55 ciated therewith a stencil screen S adapted to occupy a position in the apparatus in tangential rolling line contact with the tumbler T or other article supported therebeneath.

A transversely extending rock` shaft 25 is rockably supported across the upper ends of the stand- 5 ards I2 and a squeegee assembly 2B including a squeegee S' is secured to the shaft 25 and is rockable therewith from an inoperative elevated position to an operative lowered position in contact with the screen s in the immediate vicinity or 10 the tangential rolling of contact between the screen and tumbler. The squeegee S is adapted to force decorating material placed on the screen S through the samey and onto the article undergoing decoration.

The article supporting assembly I5 includes a carriage in the'form of a base plate 21 having an upwardly extending portion 28 at the rear thereof. An integral sleeve 29 is formed on the portion 28 and in axial alignment with the bear- 20 ings I3. The base plate 21 is rockably supported on the shaft I 4 which extends through the bearings I3 and sleeve 29. A latch-engaging arm 30 projects rearwardly from the sleeve 29 and is adapted to be engaged by a depending spring pressed latch 3| pivotally mounted on arock shaft 32 supported between the standards I2. In the latch engaging position of the arm 30, the carriage 21 is supported in a horizontal position in the apparatus. A forwardly extending latch-operating arm 33 is integrally formed on the latch 3l and is adapted to be depressed upon movel ment of the stencil screen assembly 2| to one or the other of its limiting positions to cause the latch 3I to be moved out of the path of the arm 35 30 to permit the carriage 21 to drop by gravity to the broken line position shown in Fig. 1 to permit substitution of tumblers in the apparatus.

In order to adjustably limit the downward movement of the carriage 21, an adjusting screw 40 34, threadedly received .in the base' IIJ, projects forwardly into the slot II and engages an abutment suitably secured to the rear edge of the carriage.

The base plate 21 of the carriage is provided 45 with a longitudinally extending shallow groove 40. A front article supporting bracket 4I is provided with a base 42 which is slidably disposed in the groove for longitudinal adjustment on the base plate 21 and is adapted to be clamped 50 in any desired adjusted longitudinal position by means of clamping bolts 43 (Fig. 2) extending through longitudinal slots 44 provided in the base plate 21. An offset bracket plate 45V (Fig. 1) is bolted adjacent its ends" to the upper portion of the bracket 4l and has its medial portions spaced from the body of the same. A pair of upwardly extending inclined toothed racks '45 (Fig. 2) carrying article-supporting rollers 41 at their upper ends are slidably mounted between the body of the bracket 4I land the bracket plate 45 and are adapted to be moved bodily in their respectiveinclined planes by means of toothed sectors 36 which are integrally formed on a pair of pinions 31 pivotally mounted between the bracket 4I and the bracket plate 45. A longitudinal slot 48 (Fig. 1) is formed in the base plate 21. An adjusting screw 49 extends through the slot 48 and base 42 and is'in threaded engagement with the latter. The upper end of the adjusting screw 49 is in threaded engagement with a second pair of toothed sectors 50 (Fig. 2) provided on the respective pinions 31. The lower end of the adjusting screw 49 projects below the base plate 21 and is readily'accessible to the operator of the apparatus. Thus it will be seen that turning movement of the adjusting screw-49 in one direction or the other will serve to elevate or lower the racks 46 and rollers 41 to raise or lower the rim or upper end of the tumbler T in order that proper adjustment thereof in the application of the tumbler to the screen may be eected.

The base portion of the tumbler T is supported upon rollers I (Fig. 1) which are adjustable in respective inclined planes by means of an adjusting screw 52 forming part of a. pinion and rack assembly which is substantially identical with the assembly just described for elevating or lowering the rim end of the tumbler. This assembly is similarly slidably disposed in a shalvlow groove 40 provided on the base plate 21.

The rollers 41 are ilanged as at 54 to prevent the tumbler T from creeping forwardlyV on the supporting rollers 41 and 5I due to gravitational end thrust. When the tumbler is properly positioned on the apparatus, the rollers 41 occupir a position below the plane of the rollers 5| a suicient distance to permit the tapered surface of the tumbler to make tangential line contact with the lower side of the screen S.

From the above description it will be apparent that the various adjustments necessary to properly position the tumbler T in tangential rolling line contact with the screen S may readily be made with a minimum of effort. By grasping the adjusting screw 49 -in one hand and the adjusting screw 52 in the other hand, an operator may with comparative ease bring the curved tapered surface of a tumbler T positioned on the rollers 41 and 5l into a line contact with the stencil screen S thereabove.

Modifications may be resorted to within the spirit and scope of the appended claims.

I claim:

1. In a stenciling apparatus for decorating tumblers, a tumbler support comprising a supporting bracket, a pair of racks slidably'supported for axial movement in said bracket, a roller carried by each of said racks, said rollers being adapted .to rotatably support therebetween a tumbler, and means for adjusting the axial position of said racks.

2. In a, stenciling apparatus for decorating tumblers, a tumbler support comprising a supporting bracket, a pair of racks inclined toward each other and slidably supported in said bracket for `axial movement toward and away from each other, a roller mounted on the upper end of each rack,' said rollers being adapted to rotatably support therebetween one end of a tumbler, and means for vadjusting the axial position of said racks to elevate or lower said rollers and to decrease or increase the distance therebetween.

3. In a stenciling apparatus for decorating tumblers, a tumbler support comprising a supporting bracket, a pair of racks inclined toward each other and slidably supported in said bracket for axial movement toward and away from each other, a roller mounted on the upper end of each rack, said rollers being adapted to rotatably support therebetween one end of a tumbler, and means for simultaneously adjusting the axial position of said racks to elevate or lower said rollers and to decrease or increase the distance therebetween.

4. In a stenciling apparatus for decorating tumblers, a tumbler support comprising means for supporting one end of a tumbler including a supporting bracket, a pair.K of racks inclined toward each other and slidably supported in said bracket for axial movement toward and away from each other, a roller mounted on the upper end of each rack, said rollers being adapted to rotatably support therebetween said end ot the tumbler, and means for adjusting the axial position of said racks to elevate or' lower said rollers and to decrease 'or increase the distance therebetween, and similar means including a bracket, racks, rollersand adjusting means for supporting the other end of said tumbler.

5. In a stenciling apparatus for decorating tumblers, a tumbler support comprising means for supporting one end of a tumbler and means for supporting the other end thereof, each means comprising a supporting bracket, a pair of racks inclined toward each other and slidably supported in said bracket for axial movement .t0- ward and away from each other, a roller mounted on the upper vend of each rack,` said rollers being adapted to rotatably support respective ends of said tumbler, and means for adjusting the axial position of said racks to elevate or lower said rollers and to decrease or increase the distance therebetween.

HENRY-W. SCHNEIDER. 

